package com.jy.eduservice.listener;

import com.alibaba.excel.context.AnalysisContext;
import com.alibaba.excel.event.AnalysisEventListener;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.jy.eduservice.entity.EduSubject;
import com.jy.eduservice.entity.excel.SubjectData;
import com.jy.eduservice.service.EduSubjectService;
import com.jy.servicebase.exceptionhabdler.AiShangException;

public class SubjectExcelListener extends AnalysisEventListener<SubjectData> {


    public EduSubjectService eduSubjectService;
    public SubjectExcelListener() {}
    public SubjectExcelListener(EduSubjectService subjectService) {
        this.eduSubjectService = subjectService;
    }

    //读取excel内容，一行行读取
    @Override
    public void invoke(SubjectData subjectData, AnalysisContext analysisContext) {
        if(subjectData==null){
            throw new AiShangException(20001,"文件数据为空");
        }
        //判断一级分类是否重复
        EduSubject existOneSubject = this.existOneSubject(eduSubjectService, subjectData.getOneSubjectName());
        if(existOneSubject==null){
            existOneSubject = new EduSubject();
            existOneSubject.setParentId("0");
            existOneSubject.setTitle(subjectData.getOneSubjectName()); //设置一级分类名称
            eduSubjectService.save(existOneSubject);
        }

        //添加二级分类
        //判断二级分类是否重复
        String pid = existOneSubject.getId();
        EduSubject existTwoSubject = this.existTwoSubject(eduSubjectService, subjectData.getTwoSubjectName(), pid);
        if(existTwoSubject==null){
            existTwoSubject = new EduSubject();
            existTwoSubject.setParentId(pid);
            existTwoSubject.setTitle(subjectData.getTwoSubjectName()); //设置二级分类名称
            eduSubjectService.save(existTwoSubject);
        }
    }

    //判断一级分类不能为重复添加
    private EduSubject existOneSubject(EduSubjectService eduSubjectService, String name){
        QueryWrapper<EduSubject> wrapper = new QueryWrapper<>();
        wrapper.eq("title",name);
        wrapper.eq("parent_id", "0");
        EduSubject oneSubject = eduSubjectService.getOne(wrapper);
        return oneSubject;

    }

    //判断二级分类不能为重复添加
    private EduSubject existTwoSubject(EduSubjectService eduSubjectService, String name,String pid){
        QueryWrapper<EduSubject> wrapper = new QueryWrapper<>();
        wrapper.eq("title",name);
        wrapper.eq("parent_id", pid);
        EduSubject twoSubject = eduSubjectService.getOne(wrapper);
        return twoSubject;
    }

    @Override
    public void doAfterAllAnalysed(AnalysisContext analysisContext) {

    }
}
